So it's truly gladdening to listen to actors like Downey, Johansson, Tom Hiddleston (Loki), Samuel L. Jackson (Nick Fury), Gwyneth Paltrow (Iron Man's lady-love and lifeline, Pepper Potts), Mark Ruffalo (Dr. David Banner/the Hulk), and Clark Gregg (S.H.I.E.L.D. agent Phil Coulson) speak the banter and asides in Joss Whedon's script, which is tight and – by the measure of what tends to occur in a Marvel Comics title – perfectly logical.